102201211021 has 8 divisors (see below), whose sum is σ = 125786105984. Its totient is φ = 80862496560.

The previous prime is 102201210977. The next prime is 102201211037. The reversal of 102201211021 is 120112102201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102201211021 - 2¹¹ = 102201208973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 102201210992 and 102201211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102201211051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561545025 + ... + 561545206.

It is an arithmetic number, because the mean of its divisors is an integer number (15723263248).

Almost surely, 2^102201211021 is an apocalyptic number.

It is an amenable number.

102201211021 is a deficient number, since it is larger than the sum of its proper divisors (23584894963).

102201211021 is a wasteful number, since it uses less digits than its factorization.

102201211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123090251.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102201211021 its reverse (120112102201), we get a palindrome (222313313222).

The spelling of 102201211021 in words is "one hundred two billion, two hundred one million, two hundred eleven thousand, twenty-one".